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Date:      Sun, 27 Dec 2015 17:06:06 -0600
From:      Karl Denninger <karl@denninger.net>
To:        freebsd-arm@freebsd.org
Subject:   Re: fyi: 11.0-current rpi2 systat -vmstat shows around 24k interrupts for bcm283x_dw
Message-ID:  <56806EDE.9020806@denninger.net>
In-Reply-To: <2D9BD203-03D8-4354-A335-8C43A11D1BB3@dsl-only.net>
References:  <0A781C7D-C5F5-4931-AE38-D2FEC0848DCA@dsl-only.net> <56806007.2000302@selasky.org> <2D9BD203-03D8-4354-A335-8C43A11D1BB3@dsl-only.net>

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On 12/27/2015 17:04, Mark Millard wrote:
>
> FYI (but probably unrelated?): I've not tracked anything down yet but I=
 do periodically get messages like:
>
> Dec 27 07:31:56 rpi2 kernel: bcm_dma0: unused DMA intr CH=3D3, CS=3D20f=
10027
> Dec 27 07:39:24 rpi2 kernel: bcm_dma0: unused DMA intr CH=3D3, CS=3D20f=
10027
> Dec 27 07:41:02 rpi2 kernel: bcm_dma0: unused DMA intr CH=3D3, CS=3D20f=
10027
> Dec 27 07:43:51 rpi2 kernel: bcm_dma0: unused DMA intr CH=3D3, CS=3D20f=
10027
>
> (But I also go long times without such.)
>
> Note: I'm currently involved in experiments providing evidence about Bu=
s Errors from software that misaligns pointer values and possibly from in=
appropriate/insufficient compiler options for the SCTLR bit[1]=3D=3D1 sta=
tus. clang++ is one of the programs getting Bus Errors.
>
>
I get those all the time too, and I thought they were related to the
audio going mute, but they're not related.  There's a patch floating
around that gets rid of those, but since it didn't take care of the
audio problem and this doesn't appear to actually break anything I
didn't leave it in when I last updated the tree.

--=20
Karl Denninger
karl@denninger.net <mailto:karl@denninger.net>
/The Market Ticker/
/[S/MIME encrypted email preferred]/

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